派生类生成过程——单继承的构造函数和析构函数

#include<iostream>
using namespace std;
class B
{
public:
B();
B(int i);
void print()const;
private:
int b;
};
B::B()
{
b=0;
cout<<"B's dafault constructor called."<<endl;
}
B::B(int i)
{
b=i;
cout<<"B's dafault constructor called."<<endl;
}
void B::print()const
{
cout<<b<<endl;
}
class C:public B
{
public:
C();
C(int i,int j);
void print()const;
private:
int c;
};
C::C()
{
cout<<"C's dafault constructor called."<<endl;
}
C::C(int i,int j):B(i),c(j)
{
cout<<"C's dafault constructor called."<<endl;
}
void C::print()const
{
B::print();
cout<<c<<endl;
}
int main()
{
C obj(5,6);
obj.print();
return 0;
}